CN206798700U - A kind of dustless makeup unloading system of powder catalyst - Google Patents
A kind of dustless makeup unloading system of powder catalyst Download PDFInfo
- Publication number
- CN206798700U CN206798700U CN201720098615.1U CN201720098615U CN206798700U CN 206798700 U CN206798700 U CN 206798700U CN 201720098615 U CN201720098615 U CN 201720098615U CN 206798700 U CN206798700 U CN 206798700U
- Authority
- CN
- China
- Prior art keywords
- catalyst
- closed
- dustless
- makeup
- storage tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
It the utility model is related to a kind of dustless makeup unloading system of powder catalyst.The dustless makeup unloading system of the powder catalyst is closed into warehouse receipt member, dust purification recovery unit and the closed pack unit of useless agent including new agent;New agent, which is closed into warehouse receipt member, to be included closed bale breaker and fluidizes distributor, the feed end of the discharge end connection fluidisation distributor of closed bale breaker, fluidizes the discharge end connection fresh catalyst storage tank of distributor;Dust purification recovery unit includes cyclone separator and deduster, the inlet end connection fresh catalyst storage tank of cyclone separator, the inlet end of the outlet side connection deduster of cyclone separator, the exhaust end of cyclone separator connect fresh catalyst storage tank with the exhaust end of deduster;The useless closed pack unit of agent includes measuring chute and dead catalyst bag, the discharge end connection dead catalyst bag of measuring chute.The dustless makeup unloading system of the powder catalyst, it closed to the progress of fresh powder catalyst can unpack, fluidize conveying, and closed pack can be carried out to dead catalyst and is transported.
Description
Technical field
Technical field of catalyst treatment is the utility model is related to, more particularly to a kind of dustless makeup of powder catalyst is unloaded and is
System.
Background technology
In the production process in general chemical plant, often it may require that using substantial amounts of catalyst come catalytic reaction thing, so that
Chemical reaction can favorably accomplish, and increase the production efficiency of product.In order to improve the catalytic effect of catalyst, raising is urged
Agent and reaction mass contact area, many catalyst are fabricated to particle and powder morphology, such as urging for FCC apparatus and MTO devices
Agent is tiny spheric granules, and particle diameter is typically at 20-100 μm.
Catalyst amount is very big, and catalyst is using can gradually lose the effect of catalysis after a period of time, it is therefore necessary to
The catalyst often more to renew.In transport, change, during handling catalyst, powder catalyst is easy to leak to work
Make in environment, in turn result in the pollution of environment, and the health and safety of operating personnel can be influenceed.
The tradition handling flow of powder catalyst is as follows:Fresh catalyst by tank car in bulk, container-type car or truck,
Transported from catalyst plant to catalytic cracking unit, by manually by catalyst unpacking, pouring into blowpit, then pass through vacuum handling
System transfer is to new agent tank.Used dead catalyst directly packs transport from magnetic agent tank and dispatched from the factory.
Environment dust pollution be present in artificial unpacking, the exhaust of new agent tank tank deck and the agent bagging process that gives up in traditional cargo handling process
Greatly, operating personnel must execute-in-place, hand labor intensity is big, operating environment is poor, efficiency is low, catalyst loss is big, catalyst
Time of exposed air is long, the catalyst after the easy moisture absorption, the moisture absorption enters thermal runaway, catalyst activity are easily produced in reaction unit
The problem of reduction.
Therefore, need badly and a kind of automation, the handling system of dustlessization are provided, to solve prior art powder catalyst loading and unloading
During the problem of dust pollution is serious, manual site's inefficient operation.
Utility model content
(1) technical problems to be solved
In order to solve the above mentioned problem of prior art, the utility model provides one kind and fresh powder catalyst can be carried out
It is closed to unpack, fluidize conveying, and the dustless makeup unloading system of powder catalyst of closed pack transport is carried out to dead catalyst.
(2) technical scheme
In order to achieve the above object, the main technical schemes that the utility model uses include:
The utility model provides a kind of dustless makeup unloading system of powder catalyst, including new agent is closed into warehouse receipt member, dust
Recovery Purifying unit and the closed pack unit of useless agent;New agent, which is closed into warehouse receipt member, includes closed bale breaker and fluidisation distributor, close
Close bale breaker and be provided with feed end and discharge end, fluidisation distributor is provided with feed end and discharge end, and the feed end of closed bale breaker connects
Fresh packed catalyst is connect, the discharge end connection of closed bale breaker fluidizes the feed end of distributor, fluidizes the discharge end of distributor
Connect fresh catalyst storage tank;Dust purification recovery unit includes cyclone separator and deduster, and cyclone separator is provided with air inlet
End and outlet side, deduster are provided with inlet end and outlet side, the inlet end connection fresh catalyst storage tank of cyclone separator, whirlwind
The inlet end of the outlet side connection deduster of separator;The useless closed pack unit of agent includes measuring chute and dead catalyst bag, measures
Storehouse is provided with feed end and discharge end, the feed end connection dead catalyst storage tank of measuring chute, the useless catalysis of discharge end connection of measuring chute
Agent bag.
According to the utility model, cyclone separator and deduster are additionally provided with exhaust end, the exhaust end of cyclone separator and remove
The exhaust end of dirt device connects fresh catalyst storage tank respectively.
According to the utility model, fresh catalyst storage tank is provided with one very with fluidizing the port that the discharge end of distributor is connected
Empty delivery pump.
According to the utility model, first filter core is set, the first filter core is unpacked with closed in the side wall of closed bale breaker
Device pipeline connects.
According to the utility model, the feed end of closed bale breaker sets double-deck barrel.
According to the utility model, the first valve is set between the exhaust end and fresh catalyst storage tank of cyclone separator, removed
The second valve is set between the exhaust end and fresh catalyst storage tank of dirt device.
According to the utility model, dead catalyst bag connection dedusting air-introduced machine.
According to the utility model, new agent, which is closed into warehouse receipt member, also includes for being used to transport fresh packed catalyst
Heavy equipment.
According to the utility model, the useless closed pack unit of agent also includes being used for the conveying crawler belt for transporting dead catalyst bag.
According to the utility model, the measuring chute of the closed pack unit of agent of giving up is that a volume is 1m3Small-sized storage tank.
(3) beneficial effect
The beneficial effects of the utility model are:The dustless makeup unloading system of powder catalyst provided by the utility model, change
The pattern that prior art powder catalyst manually loads and unloads, without manual operation, while will dress agent, unload agent and dedusting is combined,
Realize powder catalyst is carried out it is closed unpack, fluidize conveying, powder catalyst can be reclaimed, reduce powder and urge
The loss of agent, the clean gas dust content after purification are less than 10mg/m3, reduce the pollution to environment, and energy
It is enough that dead catalyst is subjected to closed pack transport, improve operating efficiency.
Brief description of the drawings
Fig. 1 is the schematic diagram that new agent is closed into warehouse receipt member and dust purification recovery unit;
Fig. 2 is the schematic diagram of the closed pack unit of useless agent;
Fig. 3 is the flow chart of the dustless makeup unloading system of powder catalyst of the present utility model;
Fig. 4 is the flow chart that new agent is closed into warehouse receipt member;
Fig. 5 is the flow chart of dust purification recovery unit;
Fig. 6 is the flow chart of the closed pack unit of useless agent.
【Description of reference numerals】
1:Closed bale breaker;2:Fluidize distributor;21:Air;3:Fresh catalyst storage tank;4:Cyclone separator;5:Remove
Dirt device;51:Exhaust;6:Crane gear;7:Fresh packed catalyst;8:Double-deck barrel;9:First filter core;10:Dead catalyst stores up
Tank;11:Measuring chute;12:Discharging rotary valve;13:Dead catalyst bag;14:Dedusting air-introduced machine;15:Convey crawler belt;16:Air-purifying chamber;
17:First valve;18:Second valve;19:Second filter core;20:Vacuum handling pump;100:New agent is closed into warehouse receipt member;200:Powder
Dirt Recovery Purifying unit;300:The closed pack unit of useless agent.
Embodiment
It is below in conjunction with the accompanying drawings, right by embodiment in order to understand in order to preferably explain the utility model
The utility model is described in detail.
Embodiment one
Reference picture 3, the utility model provide a kind of dustless makeup unloading system of powder catalyst, including new agent is closed into warehouse receipt
Member 100, dust purification recovery unit 200 and the closed pack unit 300 of useless agent.
Reference picture 1, new agent, which is closed into warehouse receipt member 100, includes closed bale breaker 1 and fluidisation distributor 2, and closed bale breaker 1 is set
There are feed end and discharge end, fluidisation distributor 2 is provided with feed end and discharge end, and the feed end of closed bale breaker 1 connects fresh bag
Fill catalyst 7, the feed end of the discharge end connection fluidisation distributor 2 of closed bale breaker 1, the discharge end connection of fluidisation distributor 2
Fresh catalyst storage tank 3.
Specifically, fresh catalyst storage tank 3 is provided with a vacuum handling with fluidizing the port that the discharge end of distributor 2 is connected
Pump 20, for the catalyst transport in distributor 2 will to be fluidized in fresh catalyst storage tank 3, because vacuum handling pump 20 is powerful
Swabbing action, line clogging will not be caused., it is necessary to which caused gas is discharged during powder catalyst loading and unloading.By
Contain a small amount of catalyst dust in exhaust, it is impossible to be expelled directly out, therefore set in the side wall of closed bale breaker 1 by pipeline
First filter core 9 is put, so can both filter out the catalyst dust mixed in exhaust, the purpose of exhaust can be reached again.
The feed end of closed bale breaker 1 sets double-deck barrel 8 so that fresh packed catalyst 7 is more encrypted when being contacted with closed bale breaker 1
Close, prevent dust from overflowing.
Further, new agent, which is closed into warehouse receipt member 100, also includes a crane gear for being used to transport fresh packed catalyst 7
6, for fresh packed catalyst 7 to be delivered to the top of closed bale breaker 1.In the utility model embodiment, this resets
Standby 6 be electric hoist, but for the utility model, it is not limited to this or other there is improving material effect
Device.
Reference picture 1, dust purification recovery unit 200 include cyclone separator 4 and deduster 5, cyclone separator 4 be provided with into
Gas end and outlet side, deduster 5 are provided with inlet end and outlet side, the inlet end connection fresh catalyst storage tank of cyclone separator 4
3, the inlet end of the outlet side connection deduster 5 of cyclone separator 4.
Further, cyclone separator 4 and deduster 5 are additionally provided with exhaust end, the exhaust end and deduster 5 of cyclone separator 4
Exhaust end connect fresh catalyst storage tank 3 respectively.The exhaust end of cyclone separator 4 and the exhaust end of deduster 5 can store
By cyclone separator 4 and the fresh catalyst of the separating and filtering of deduster 5, play a part of recovery.
Specifically, first valve 17 is set between the exhaust end of cyclone separator 4 and fresh catalyst storage tank 3, removed
One the second valve 18 is set between the exhaust end and fresh catalyst storage tank 3 of dirt device 5.Enter the mistake of luggage agent in powder catalyst
Cheng Zhong, the first valve 17 and the second valve 18 are closed, after dress agent process terminates, then by the first valve 17 and the second valve 18
Open, the fresh powder catalyst that sedimentation filtration obtains in cyclone separator 4 and deduster 5 can thus be reclaimed and entered
In fresh catalyst storage tank 3, without extra conveying and power, simple to operate, the saving energy.
Further, cyclone separator 4 can separate >=10 μm of solid particle, and deduster 5 can filter≤1 μm of solid
Particle.
Further, the dustiness of the purified gas of dust purification recovery unit 200 is less than 10mg/m3。
Reference picture 2, the useless closed pack unit 300 of agent include measuring chute 11 and dead catalyst bag 13, measuring chute 11 be provided with into
Expect end and discharge end, the feed end connection dead catalyst storage tank 10 of measuring chute 11, the discharge end connection dead catalyst of measuring chute 11
Bag 13.
Specifically, dead catalyst bag 13 connects dedusting air-introduced machine 14, so can be in dead catalyst bagging process
Exhaust carries out dedusting.One discharging rotary valve 12 is installed between measuring chute 11 and dead catalyst bag 13, by controlling discharging to revolve
Rotary valve 12 realizes the steady filling of dead catalyst bag 13, ensures the normal conveying of dead catalyst.The useless closed pack unit 300 of agent
Measuring chute 11 is specially that a volume is 1m in the utility model3Small-sized storage tank.
Further, the closed pack unit 300 of agent that gives up also includes being used for the conveying crawler belt 15 for transporting dead catalyst bag 13, is used for
The dead catalyst bag 13 filled is delivered to outside handling system.
Embodiment two
The operating process of the dustless makeup unloading system of powder catalyst provided by the utility model is:
Reference picture 1, Fig. 3 and Fig. 4, new agent are closed into warehouse receipt member 100, are delivered to fresh packed catalyst 7 by electric hoist
The top of closed bale breaker 1, the sack of fresh packed catalyst 7 is filled in closed bale breaker 1 feed end double-deck barrel 8 it
Between.Place it is safe after the cover with sealing ring is fixed to the sack of fresh packed catalyst 7, solve opened mouth tether, it is fresh
Catalyst enters fluidisation distributor 2 after closed bale breaker 1, while is passed through air 21, fresh catalyst to fluidisation distributor 2
It is delivered to after being mixed in fluidizing distributor 2 with Air Fluidized by vacuum handling pump 20 in fresh catalyst storage tank 3.Powder is urged
Agent will be purified after caused dust-laden exhaust is via the first filter core 9 filtering of closed bale breaker 1 during closed unpack
Gas arrange to air, prevent dust pollution air.
Wherein, the concentration of powder catalyst is very big, and it can realize powder by fluidizing the fluidisation distribution grid of distributor 2
Gas-solid mixing fluidizes, and will not result in blockage.
Reference picture 1, Fig. 3 and Fig. 5, in dust purification recovery unit 200, the dust laden air in fresh catalyst storage tank 3 is first
The inlet end for first passing through cyclone separator 4 enters in cyclone separator 4, and particle larger in dust laden air is removed, and takes off
Except the exhaust end of a small amount of dust catalyst sedimentation out to cyclone separator 4, the gas after the removing of cyclone separator 4 leads to
The outlet side for crossing cyclone separator 4 enters the inlet end of deduster 5, further dedusting is carried out hence into deduster 5, in gas
The dust catalyst mixed is intercepted and is attached to the outer surface of the second filter core 19, the clean gas dust content after purification
Less than 10mg/m3, then the air-purifying chamber 16 through the second filter core 19 into deduster 5, then arranged from the outlet side of deduster 5 to big
Gas, i.e., the exhaust 51 shown in Fig. 1.Cyclone separator 4 can be with automatic running, and without operation and maintenance, deduster 5 needs periodically
Blowback, by supporting control system automatic running, detailed process is:Periodically open injection tube road junction, blast pass is from second
The openend of filter core 19 enters, and outwards flowed by the second filter core 19, by powder catalyst from the outer surface blowback of the second filter core 19
Get off to the exhaust end of deduster 5.Open the first valve 17 and the second valve 18, be stored in cyclone separator 4 exhaust end and
Powder catalyst in the exhaust end of deduster 5 is settled and entered in fresh catalyst storage tank 3 downwards under gravity, is reached
To the purpose of catalyst recovery.Thus, reclaiming the powder catalyst of filtering can directly drain into fresh catalyst storage tank 3, nothing
Need extra conveying equipment and power.
Reference picture 2, Fig. 3 and Fig. 6, agent of giving up is closed to be packed in unit 300, by being arranged in reactor or dead catalyst regenerator
The dead catalyst gone out enters dead catalyst storage tank 10 by the feed end of dead catalyst storage tank 10, and then dead catalyst is by useless catalysis
The discharge end of agent storage tank 10 is entered in measuring chute 11 by the feed end of measuring chute 11.The volume of measuring chute 11 is 1m3, Mei Dangji
When amount storehouse 11 is loaded full, the discharging rotary valve 12 between measuring chute 11 and dead catalyst bag 13 is turned on so that dead catalyst
Into in dead catalyst bag 13, the steady filling of dead catalyst is thereby guaranteed that.Caused dusty gas is by dedusting during filling
Air-introduced machine 14 is siphoned away, and solid dust is separated, and dusty gas is discharged after being purified.The dead catalyst bag 13 filled is logical
Cross conveying crawler belt 15 to transport to handling system, then transported dead catalyst using fork truck or small-sized hydraulic trailer.
In summary, the dustless makeup unloading system of powder catalyst provided by the utility model, changes prior art powder
The pattern that catalyst manually loads and unloads, without manual operation, while will dress agent, unload agent and dedusting is combined, realize and powder urged
Agent progress is closed to be unpacked, fluidizes conveying, and powder catalyst can be reclaimed, and reduces the damage of powder catalyst
Lose, the clean gas dust content after purification is less than 10mg/m3, reduce the pollution to environment, and can be urged useless
Agent carries out closed pack transport, improves operating efficiency.
It is to be appreciated that the description carried out above to specific embodiment of the utility model is simply to illustrate that this practicality
New technology path and feature, its object is to allow those skilled in the art to understand content of the present utility model simultaneously
Implement according to this, but the utility model is not limited to above-mentioned particular implementation.Every scope in the utility model claims
The various change inside made or modification, it should all cover in the scope of protection of the utility model.
Claims (10)
- A kind of 1. dustless makeup unloading system of powder catalyst, it is characterised in that:Warehouse receipt first (100), dust are closed into including new agent Recovery Purifying unit (200) and the closed pack unit (300) of useless agent;Described new dose is closed into warehouse receipt first (100) and includes closed bale breaker (1) and fluidisation distributor (2), the closed bale breaker (1) feed end and discharge end are provided with, the fluidisation distributor (2) is provided with feed end and discharge end, the closed bale breaker (1) Feed end connects fresh packed catalyst (7), the discharge end connection fluidisation distributor (2) of the closed bale breaker (1) Feed end, the discharge end connection fresh catalyst storage tank (3) of the fluidisation distributor (2);The dust purification recovery unit (200) includes cyclone separator (4) and deduster (5), and the cyclone separator (4) sets There are inlet end and outlet side, the deduster (5) is provided with inlet end and outlet side, and the inlet end of the cyclone separator (4) connects The fresh catalyst storage tank (3) is connect, the outlet side of the cyclone separator (4) connects the inlet end of the deduster (5);The closed pack unit (300) of useless agent includes measuring chute (11) and dead catalyst bag (13), and the measuring chute (11) sets There are feed end and discharge end, the feed end of the measuring chute (11) connects dead catalyst storage tank (10), the measuring chute (11) Discharge end connection dead catalyst bag (13).
- 2. the dustless makeup unloading system of powder catalyst as claimed in claim 1, it is characterised in that:The cyclone separator (4) and the deduster (5) are additionally provided with exhaust end, the exhaust end of the cyclone separator (4) and The exhaust end of the deduster (5) connects the fresh catalyst storage tank (3) respectively.
- 3. the dustless makeup unloading system of powder catalyst as claimed in claim 2, it is characterised in that:The port that the fresh catalyst storage tank (3) is connected with the discharge end of the fluidisation distributor (2) is defeated provided with a vacuum Send pump (20).
- 4. the dustless makeup unloading system of powder catalyst as claimed in claim 2, it is characterised in that:One the first filter core (9) is set in the side wall of the closed bale breaker (1), and first filter core (9) closed is torn open with described Bag device (1) pipeline connects.
- 5. the dustless makeup unloading system of powder catalyst as claimed in claim 2, it is characterised in that:The feed end of the closed bale breaker (1) sets double-deck barrel (8).
- 6. the dustless makeup unloading system of powder catalyst as claimed in claim 2, it is characterised in that:The first valve (17) is set between the exhaust end and the fresh catalyst storage tank (3) of the cyclone separator (4), it is described Second valve (18) is set between the exhaust end of deduster (5) and the fresh catalyst storage tank (3).
- 7. the dustless makeup unloading system of powder catalyst as claimed in claim 2, it is characterised in that:Dead catalyst bag (13) the connection dedusting air-introduced machine (14).
- 8. the dustless makeup unloading system of powder catalyst as claimed in claim 2, it is characterised in that:Described new dose is closed into warehouse receipt first (100) and is also reseted including one for transporting rising for the fresh packed catalyst (7) Standby (6).
- 9. the dustless makeup unloading system of powder catalyst as claimed in claim 2, it is characterised in that:The closed pack unit (300) of useless agent also includes being used for the conveying crawler belt (15) for transporting the dead catalyst bag (13).
- 10. the dustless makeup unloading system of powder catalyst as claimed in claim 2, it is characterised in that:The measuring chute (11) of the closed pack unit (300) of useless agent is 1m for a volume3Small-sized storage tank.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201720098615.1U CN206798700U (en) | 2017-01-26 | 2017-01-26 | A kind of dustless makeup unloading system of powder catalyst |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201720098615.1U CN206798700U (en) | 2017-01-26 | 2017-01-26 | A kind of dustless makeup unloading system of powder catalyst |
Publications (1)
Publication Number | Publication Date |
---|---|
CN206798700U true CN206798700U (en) | 2017-12-26 |
Family
ID=60729468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201720098615.1U Expired - Fee Related CN206798700U (en) | 2017-01-26 | 2017-01-26 | A kind of dustless makeup unloading system of powder catalyst |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN206798700U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113003255A (en) * | 2021-02-20 | 2021-06-22 | 上海阳申石化设备安装有限公司 | Catalyst loading and unloading method and application thereof |
-
2017
- 2017-01-26 CN CN201720098615.1U patent/CN206798700U/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113003255A (en) * | 2021-02-20 | 2021-06-22 | 上海阳申石化设备安装有限公司 | Catalyst loading and unloading method and application thereof |
CN113003255B (en) * | 2021-02-20 | 2023-02-17 | 上海阳申石化设备安装有限公司 | Catalyst loading and unloading device and application thereof |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103388046B (en) | Pneumatic transmission method for dry dedusting of fine ash in converter gas | |
CN104129654B (en) | A kind of drum type device for discharging and pneumatic conveying material transmission system thereof | |
BR112013013183B1 (en) | system to release solid particulate material for loading | |
CN100999276A (en) | Fluidising device for conveying tank of bulk powdered material | |
CN207986257U (en) | A kind of ton packet discharging transport system with dust-absorbing function | |
CN103332458B (en) | The thin grey air-transport system of a kind of dry dedusting of converter | |
CN103332494B (en) | Pneumatic conveying method for removing dust and crude ash in dry process of converter once flue gas | |
CN206798700U (en) | A kind of dustless makeup unloading system of powder catalyst | |
CN103332493B (en) | Pneumatic conveying method for removing dust and crude ash in dry process of converter gas | |
CN206604474U (en) | The dustless Cosmetic material system of powder catalyst | |
CN203428455U (en) | Pneumatic fine ash conveying system for converter gas dry dedusting | |
CN203033223U (en) | Storage and discharging device for dust transportation | |
US4227997A (en) | Mobile non-polluting cleaning and processing apparatus and method | |
CN202410473U (en) | Dry waste gas treatment device | |
CN103332489B (en) | A kind of dry dedusting of converter cinder pneumatic conveying method | |
CN102616568B (en) | Dust-free automatic catalyst conversion system of catalytic cracking device | |
CN214326507U (en) | Novel aluminum oxide automatic filling device | |
CN211159809U (en) | Regeneration facility is handled to aluminium oxide bobble | |
CN103318648B (en) | Converter gas dry-method dedusting cinder pneumatic conveying method | |
CN220148588U (en) | Alumina loading and unloading device of dryer | |
CN209423499U (en) | A kind of the mixture of airstream and strength device | |
CN202321658U (en) | Pneumatic conveying device of powder particle material | |
CN200999137Y (en) | Fluidizer of loose unpacked powder material accumulating tank | |
CN103332490B (en) | Converter gas dry dedusting fine dust pneumatic transport system | |
CN206276169U (en) | A kind of dry blend conveys dedusting tank |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171226 Termination date: 20200126 |
|
CF01 | Termination of patent right due to non-payment of annual fee |